How popular is Armin?

Armin is an unusual first name for males but a somewhat prominent last name for all people (#114852 out of 150436, Top 76%). (2000 U.S. DEMOGRAPHICS)

Armin entered the list in 1890-1899 and reached its peak rank of #1107 in the U.S. in the 1910s, but is not ranked currently. (TOP 2000 NAMES, 2016)

Which version is better?

Armando(#452 THE PREVIOUS YEAR), Arman(#1563), Herman(#1854), Armand, Harman, Harmon and Hermon are the popular alternative forms of Armin. Other forms, like Ermin, are uncommon. Adoption of these relations of Armin reached its apex a century ago (USAGE OF 0.4%) and is now significantly diminished, with forms like Hermon going out of style.